Swift 3 ObjectOriented Programming - Second Edition

Test your knowledge

1. We can add the following type of initializers to a class with extensions:
   1. Convenience initializers.
   2. Designated initializers.
   3. Primary initializers.

2. We can add the following type of properties to a class with extensions:
   1. Read/write stored type properties.
   2. Primary properties.
   3. Computed instance properties and computed type properties.

3. Convenience initializers are:
   1. Optional.
   2. Required.
   3. Required only in superclasses.

4. A convenience initializer acts as:
   1. A required initializer that doesn't need to call any other initializer.
   2. A secondary initializer that doesn't need to call any other initializer.
   3. A secondary initializer that always ends up calling a designated initializer.

5. If we declare the type for a property as UIPickerView!, Swift will treat ...